BLUF: [Breitbart] A 2013 study from a research team led by Dr. Timothy Rodwell, "an associate professor and physician in the Division of Global Health at UCSD [University of California at San Diego]" that "analyzed data from LTBI [latent tuberculosis infection] screening results of 4,280 refugees resettled in San Diego County between January 2010 and October 2012," noted that "San Diego County, in California, is a leading refugee resettlement site, and it also has one of the highest rates of active TB in the country, with an incidence rate of 8.4 cases per 100 000 people in 2011." (The incidence rate in the entire population in the United States in 2016 was 2.9 per 100,000).The study, which was funded in part by the National Institutes of Health, found that, of the 4,280 refugees resettled in San Diego County during the 34 months beginning in January 2010:
Nine hundred sixteen refugees (21.4%) in the study had a positive QFT-GIT result (Table 1). Of those, 823 (89.8%) had a normal chest radiograph and were diagnosed with LTBI (Figure 1). Sixty-one (6.7%) did not receive a chest radiograph; 14 (1.5%) had an abnormal result that was consistent with active TB; and 18 (2.0%) had an abnormal result that was not consistent with active TB.
In other words, the incidence of active TB among the 4,280 refugees who were resettled in San Diego County between January 2010 and October 2012 was 327 per 100,000, more than 100 times greater than the incidence of active TB among the entire population of the United States in 2016.